23002121255 has 32 divisors (see below), whose sum is σ = 29252413440. Its totient is φ = 17337438720.

The previous prime is 23002121243. The next prime is 23002121393. The reversal of 23002121255 is 55212120032.

It is not a de Polignac number, because 23002121255 - 2⁴ = 23002121239 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 23002121255.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1113077 + ... + 1133553.

It is an arithmetic number, because the mean of its divisors is an integer number (914137920).

Almost surely, 2^23002121255 is an apocalyptic number.

23002121255 is a deficient number, since it is larger than the sum of its proper divisors (6250292185).

23002121255 is a wasteful number, since it uses less digits than its factorization.

23002121255 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20699.

The product of its (nonzero) digits is 1200, while the sum is 23.

Adding to 23002121255 its reverse (55212120032), we get a palindrome (78214241287).

The spelling of 23002121255 in words is "twenty-three billion, two million, one hundred twenty-one thousand, two hundred fifty-five".